education and once the child turns 18, says chen, they can help others get green cards and become u.s. citizens. >> not here! >> reporter: neighborhood protests have sprung up around the state. >> go back to your country! >> reporter: local authorities have busted some of these houses for code violations but not for so-called birth tourism. that's because under current federal laws, it's not illegal. >> legally barred from denying a visa on the basis of someone being pregnant. >> reporter: that's the way it should be, say the parents of 3 month old francine. the family traveled to a u.s. maternity hotel so she could be born in america. dad is a naturalized u.s. citizen and says he understands why chinese citizens come to the u.s. to give birth. >> they pay the fee, they got a visa, they do it legally so some people are upset saying the chinese are taking advantage of the services. well, can say the same thing to americans, some of them, taking advantage of chinese services in china. >> reporter: back at this house, workers continue to move in baby items, prep for meals and the shadow